<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>欢迎登录</title>
</head>
<body>
  <h1>登录页面</h1>
  <form action="/doLogin" method="post">
    用户名: <input name="username"/> </br>
    密码:   <input name="password"/>  </br>
    <input  type="hidden" name="url" th:value="${url}"/>
    <input  type="submit" value="登录">
  </form>
</body>
</html>